Question

Two sound waves have wavelength 85/170

and 85/172

m in air. Each wave produces 4 beats per

second with a third note of fixed frequency.(Please don't write 'I don't know' or any other thing to scam me... the answer is necessary)
Calculate the velocity of sound in air and the

frequency to the third note.​

Answer 1

Solution :-

We know that

\boxed{\bf CSA = \pi rl}

CSA=πrl

↠ CSA = π × 6 × 12

↠ CSA = π × 72

↠ CSA = 72π

∴ CSA is 72 π cm²

Answer 2

Answer:

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